/* 技术合作页面样式 */

/* 局部字体与抗锯齿，仅作用于本页 */
body {
  font-family: "HarmonyOS Sans SC","PingFang SC","MiSans","Noto Sans SC","Source Han Sans SC","Microsoft YaHei",system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* 技术合作页头可读性增强：仅本页生效 */
.header {
  background: #ffffff;
  box-shadow: 0 2px 8px rgba(0,0,0,0.04);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
}

/* 调整logo布局，参考腾讯设计：logo和公司名称同行 */
.header-container {
  padding: 15px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  position: static;
  left: auto;
  top: auto;
}

.logo a {
  flex-direction: row;
  align-items: center;
}

.logo-img {
  margin-right: 15px;
}

.header .logo-text,
.header .logo-subtitle {
  color: #000000;
  text-shadow: none;
}

.header .logo-text {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.header .logo-subtitle {
  font-size: 0.7rem;
  color: #64748B;
  font-weight: 400;
}

/* 调整导航容器位置，避免与logo重叠 */
.nav-container {
  background: rgba(255,255,255,0.95);
  backdrop-filter: saturate(1.2) blur(6px);
  -webkit-backdrop-filter: saturate(1.2) blur(6px);
  border-top: 1px solid #f0f0f0;
  border-bottom: 1px solid #f6f6f6;
  position: static;
  top: auto;
  right: auto;
  width: 100%;
  padding: 10px 0;
}

.nav-menu {
  justify-content: center;
}

.nav-link {
  color: #222 !important;
}
.nav-link:hover {
  color: #111 !important;
  text-shadow: none;
}
.nav-link.active {
  color: var(--primary-color) !important;
  text-shadow: none;
}
.nav-link.active::after {
  background-color: var(--primary-color) !important;
}

/* 调整获取报价按钮位置，避免遮挡导航 */
.get-quote {
  position: absolute;
  right: 30px;
  top: 15px;
  transform: none;
  background: var(--primary-color);
  color: #fff !important;
  border-color: var(--primary-color);
  writing-mode: horizontal-tb;
  text-orientation: mixed;
  letter-spacing: normal;
  padding: 10px 20px;
  border-radius: 4px;
}

.mobile-toggle {
  color: #222;
}

/* 页面横幅 */
.page-banner {
  height: 500px;
  background-size: cover;
  background-repeat: no-repeat;
  background-position: center;
  display: flex;
  align-items: flex-end; /* 修改为flex-end，使文字垂直移动到页幅底图下端 */
  justify-content: flex-start;
  color: #ffffff;
  margin-top: 120px;
  padding-left: 0px; /* 与其他页面保持一致 */
  padding-bottom: 40px; /* 添加底部内边距，确保文字不会紧贴底部 */
}

/* 确保页幅横幅背景图片显示 */
section.page-banner {
  background-image: url('../企业网站页幅底图.png') !important;
}

.banner-title {
  font-size: 3.5rem;
  font-weight: 200;
  font-style: italic;
  letter-spacing: 0.1em;
  text-align: left;
  text-shadow: 0 3px 10px rgba(0, 0, 0, 0.5);
  color: rgba(255, 255, 255, 0.95);
  background: linear-gradient(135deg, #ffffff 0%, #e0e0e0 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 响应式设计优化 */
@media (max-width: 992px) {
  .page-banner {
    height: 450px;
    padding-left: 60px; /* 与其他页面保持一致 */
    padding-bottom: 40px; /* 保持底部内边距 */
  }
  
  .banner-title {
    font-size: 3rem;
  }
}

@media (max-width: 768px) {
  .page-banner {
    height: 400px;
    padding-left: 40px; /* 与其他页面保持一致 */
    padding-bottom: 40px; /* 保持底部内边距 */
  }
  
  .banner-title {
    font-size: 2.5rem;
  }
}

@media (max-width: 576px) {
  .page-banner {
    height: 350px;
    padding-left: 20px; /* 与其他页面保持一致 */
    padding-bottom: 40px; /* 保持底部内边距 */
  }
  
  .banner-title {
    font-size: 2rem;
    font-weight: 300;
  }
}

/* 技术合作主标题样式 - 应用HarmonyOS Sans字体 */
.cooperation-main-title {
  font-family: 'HarmonyOS Sans', 'M Ying Hei', 'PingFang SC', 'Microsoft YaHei', 'Source Han Sans SC', sans-serif;
  color: #2A2E2E;
  font-style: italic;
  font-size: 2.125rem;
  margin-bottom: 24px;
  font-weight: 200; /* 修改为更纤细的字体样式，与开启之路标题保持一致 */
  letter-spacing: 0.2px;
  line-height: 1.3;
  position: relative;
  padding-bottom: 12px;
}

/* 为技术合作主标题添加森林深绿色下划线 */
.cooperation-main-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 80px;
  height: 4px;
  background-color: #065F46;
  border-radius: 2px;
}

/* 技术合作服务内容 */
.cooperation-services {
  background-color: var(--white);
  padding: 80px 0;
}

.service-section {
  margin-bottom: 60px;
  padding: 40px;
  border-radius: 12px;
  background-color: #f9f9f9;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.service-title {
  font-size: 2rem;
  font-weight: 700;
  color: #000000;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 15px;
  font-family: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", "Helvetica Neue", Arial, sans-serif;
}

.service-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 3px;
  background-color: #000000;
}

.service-description {
  font-size: 1.1rem;
  line-height: 1.8;
  color: #555;
  margin-bottom: 30px;
}

.service-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
  margin-top: 30px;
}

.feature-item {
  background-color: var(--white);
  padding: 25px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: var(--transition);
}

.feature-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.feature-item h4 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.feature-item p {
  color: #666;
  line-height: 1.6;
}

.service-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  margin-top: 30px;
}

.service-item {
  background-color: var(--white);
  padding: 25px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
  transition: var(--transition);
  border-left: 4px solid var(--primary-color);
}

.service-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.service-item h4 {
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 10px;
}

.service-item p {
  color: #666;
  line-height: 1.6;
}

/* 手风琴组件样式 - 全新专业设计 */
.accordion {
  margin: 40px 0;
}

/* 手风琴项目 - 默认状态 */
.accordion-item {
  background-color: #FFFFFF;
  border: 1px solid #e0e0e0;
  border-radius: 12px;
  margin-bottom: 15px;
  padding: 25px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
  cursor: pointer;
  transition: all 0.3s ease-in-out;
  position: relative;
  scroll-margin-top: 140px; /* 锚定偏移补偿固定头部 */
}

/* 鼠标悬停状态 */
.accordion-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
}

/* 展开状态 */
.accordion-item.active {
  border-color: #065F46;
}

.accordion-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: 0;
  padding: 0;
}

/* 标题文字样式 */
.accordion-header h2,
.accordion-header h3,
.accordion-header h4 {
  font-family: 'Noto Sans SC', sans-serif;
  color: #2A2E2E;
  font-weight: 400;
  font-size: 1.2rem;
  line-height: 1.5;
  margin: 0;
  text-decoration: none !important;
  border-bottom: none !important;
}

/* 右侧V形箭头图标 */
.accordion-arrow {
  width: 0;
  height: 0;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  border-top: 12px solid #2A2E2E;
  transition: transform 0.3s ease-in-out;
  margin-left: 15px;
  flex-shrink: 0;
}

/* 展开时箭头旋转 */
.accordion-item.active .accordion-arrow {
  transform: rotate(180deg);
}

.accordion-content {
    display: none;
    padding: 0;
    background-color: #f9f9f9;
    border-top: 1px solid #ddd;
    max-height: 600px;
    overflow-y: auto;
}

/* 展开时显示内容 */
.accordion-item.active .accordion-content {
    display: block;
}

.accordion-content-inner {
  padding: 30px;
  line-height: 1.8;
  border-top: 1px solid #f0f0f0;
  font-family: 'Noto Sans SC', sans-serif;
  color: #555;
  font-size: 1rem;
}

.accordion-content p {
  font-family: 'Noto Sans SC', sans-serif;
  margin-bottom: 18px;
  color: #555;
  line-height: 1.8;
  font-size: 1rem;
}


.accordion-content h4 {
  font-family: 'Noto Sans SC', sans-serif;
  color: #065F46;
  font-weight: 600;
  margin: 25px 0 15px 0;
  font-size: 1.1rem;
  position: relative;
  padding-left: 16px;
}

/* 为h4标题添加左侧绿色竖线 */
.accordion-content h4::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background-color: #065F46;
  border-radius: 2px;
}

/* h5和h6标题样式 */
.accordion-content h5 {
  font-family: 'Noto Sans SC', sans-serif;
  color: #2A2E2E;
  font-weight: 600;
  margin: 20px 0 12px 0;
  font-size: 1.05rem;
}

.accordion-content h6 {
  font-family: 'Noto Sans SC', sans-serif;
  color: #065F46;
  font-weight: 500;
  margin: 16px 0 8px 0;
  font-size: 1rem;
}

/* 优化列表样式 */
.accordion-content ol {
  margin: 20px 0;
  padding-left: 24px;
  counter-reset: item;
}

.accordion-content ol li {
  font-family: 'Noto Sans SC', sans-serif;
  margin-bottom: 16px;
  color: #555;
  line-height: 1.8;
  position: relative;
  padding-left: 8px;
}

.accordion-content ul {
  margin: 20px 0;
  padding-left: 24px;
}

.accordion-content ul li {
  font-family: 'Noto Sans SC', sans-serif;
  margin-bottom: 12px;
  color: #555;
  line-height: 1.8;
  padding-left: 8px;
}

/* 强调文本样式 */
.accordion-content strong {
  color: #2A2E2E;
  font-weight: 600;
}

/* 服务阶段样式 */
.service-phase {
  background-color: #f8f9fa;
  border-left: 4px solid #065F46;
  padding: 24px;
  margin: 25px 0;
  border-radius: 8px;
}

.service-phase h4 {
  color: #065F46;
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 16px;
  padding-left: 0;
}

.service-phase h4::before {
  display: none;
}

/* 响应式设计 */
@media (max-width: 992px) {
  .page-banner {
    height: 350px;
    padding-left: 60px;
  }
  
  .banner-title {
    font-size: 3rem;
  }
  
  .service-section {
    padding: 30px;
  }
}

@media (max-width: 768px) {
  .page-banner {
    height: 320px;
    padding-left: 40px;
  }
  
  .banner-title {
    font-size: 2.5rem;
  }
  
  .service-features {
    grid-template-columns: 1fr;
  }
  
  .service-grid {
    grid-template-columns: 1fr;
  }
  
  .service-section {
    padding: 25px;
    margin-bottom: 40px;
  }
  
  .service-title {
    font-size: 1.6rem;
  }
  
  .accordion-item {
    padding: 20px;
    margin-bottom: 12px;
  }
  
.accordion-header h2,
.accordion-header h3,
.accordion-header h4 {
    font-size: 1.1rem;
  }
  
.accordion-arrow {
    border-left-width: 8px;
    border-right-width: 8px;
    border-top-width: 10px;
  }
}

@media (max-width: 576px) {
  .page-banner {
    height: 280px;
    padding-left: 20px;
  }
  
  .banner-title {
    font-size: 2rem;
    font-weight: 300;
  }
  
  .service-section {
    padding: 20px;
  }
  
  .service-title {
    font-size: 1.4rem;
  }
  
  .cooperation-services {
    padding: 60px 0;
  }
  
  .accordion-item {
    padding: 18px;
    border-radius: 8px;
  }
  
  .accordion-header h2,
  .accordion-header h3,
  .accordion-header h4 {
    font-size: 1rem;
  }
}